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HPL_indxl2g(3) HPL Library Functions HPL_indxl2g(3)
HPL_indxl2g - Map a index-process pair into a global index.
int HPL_indxl2g( const int IL, const int INB, const int NB, const int
PROC, const int SRCPROC, const int NPROCS );
HPL_indxl2g computes the global index of a matrix entry pointed to by
the local index IL of the process indicated by PROC.
IL (input) const int
On entry, IL specifies the local index of the matrix entry.
IL must be at least zero.
INB (input) const int
On entry, INB specifies the size of the first block of the
global matrix. INB must be at least one.
NB (input) const int
On entry, NB specifies the blocking factor used to partition
and distribute the matrix A. NB must be larger than one.
PROC (input) const int
On entry, PROC specifies the coordinate of the process whose
local array row or column is to be determined. PROC must be
at least zero and strictly less than NPROCS.
SRCPROC (input) const int
On entry, SRCPROC specifies the coordinate of the process
that possesses the first row or column of the matrix. SRCPROC
must be at least zero and strictly less than NPROCS.
NPROCS (input) const int
On entry, NPROCS specifies the total number of process rows
or columns over which the matrix is distributed. NPROCS must
be at least one.
HPL_indxg2l (3), HPL_indxg2lp (3), HPL_indxg2p (3), HPL_numroc (3),
HPL 2.1 October 26, 2012 HPL_indxl2g(3)